Tall long and wide
Lot of people don't like cleaning a tall tank, understandably, but IMO a tall tank give a visual impact that a shorter tank just can't give. It's like having a wall of fish in front of you which I really like. My 240g is 30" tall and I love that about it. It IS harder to clean down to the bottom, but luckily I am 6'5" with long arms so it's a bit easier for me. I can see why some would not like it though for sure.
